Ohio Resource Center

 Geometry

 Enlarge Anno's Math Games IIIAuthor: Mitsumasa AnnoIllustrator: Mitsumasa AnnoPublisher: Philomel BooksCopyright: 1982/1991ISBN: 0-399-22274-XNumber of Pages: 104Ohio Standards Alignment: Grades 3–10Anno's Math Games III is the third in a series of delightful books that are full of ideas to stimulate upper elementary and young adolescent student thinking.  The text has four stand-alone chapters: Changing Shapes with Magic Liquid (stretching/shrinking); Exploring Triangles (tesselating/origami); Mazes (paths/open & closed); and Left and Right (symmetry/orientation).  The Afterword provides mathematical explanations of each chapter. The illustrations are classic Anno sketches that easily draw students into the mathematical concepts in our world.  Go to: How to Use This BookHighlights and InsightsRelated ORC ResourcesOhio Standards

 How to Use This Book This book would serve as an excellent introduction to many topics in mathematics. Each geometry topic taught within the year could begin with an "Anno Adventure," and as the unit progresses, references could be made to the book. An excellent book to have in the classroom year round to stimulate student thinking and problem-solving skills. Students might even pose problems to fellow classmates in Anno's style. Students might want to create their own distortions of objects, or use the animals Anno has used and distort them in other ways. Coordination with the art teacher offers interesting possibilities. Older students could creat "Left and Right" books for younger students. Include vignettes from the book in journal prompts. Offer the book as a literature connection to concepts learned in class.
 Highlights and Insights Visual imagery and spatial sense are well addressed throughout this book. Anno uses an enlargement grid system for children to enlarge drawings. Next, he changes the square grid enlargement process and creates distortions by placing a square grid over the original drawing and transferring image points onto a rectangular grid that has been stretched in various ways. Anno's bridge problem leads to a discussion of the Bridges of Konigsburg problem, which in turn leads to Euler's formula for traceable paths using even and odd vertices in line drawings. Anno connects this work to the theory of electrical circuits.